63550920 has 64 divisors (see below), whose sum is σ = 191574720. Its totient is φ = 16865024.

The previous prime is 63550891. The next prime is 63550951. The reversal of 63550920 is 2905536.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26074 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (2993355).

Almost surely, 2^63550920 is an apocalyptic number.

63550920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63550920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95787360).

63550920 is an abundant number, since it is smaller than the sum of its proper divisors (128023800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63550920 is a wasteful number, since it uses less digits than its factorization.

63550920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574 (or 2570 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 63550920 is about 7971.8830899606. The cubic root of 63550920 is about 399.0622198056.

The spelling of 63550920 in words is "sixty-three million, five hundred fifty thousand, nine hundred twenty".